The main opposition Democratic Party of Korea, which holds the majority of seats in the National Assembly, has four times proposed special probes into Kim's corruption allegations, including election interference, involvement in illegal election predictions and leakage of confidential information to unauthorized people for their alleged financial benefit.

The opposition has also suspected that she was involved in stock price manipulation that is speculated to have led to her financial gains over approximately three years beginning slightly over a decade before she became the first lady.